Write a shell script in Linux/Unix to find the biggest number in an array.

---

echo "ENTER THE NUMBER OF ELEMENTS-"
read e
i=0
while test $i -le `expr $e - 1`
do
echo "ENTER $i ELEMENT-"
read a[i]
i=`expr $i + 1`
done
#SEARCHING THE BIGGEST
lar=${a[0]}
i=1
while test $i -le `expr $e - 1`
do
if test ${a[i]} -gt $lar
then
lar=${a[i]}
fi
i=`expr $i + 1`
done
echo "THE LARGEST NUMBER IS-" $lar

---

OUTPUT:

ENTER THE NUMBER OF ELEMENTS-
3
ENTER 0 ELEMENT-
6
ENTER 1 ELEMENT-
8
ENTER 2 ELEMENT-
12
THE LARGEST NUMBER IS-12

Write a shell script in Linux/Unix to find the Reverse of a number and check whether the number is Palindrome or not.

---

echo "ENTER A NUMBER-"
read n
rev=0
t=$n
while test $n -ne 0
do
r=`expr $n % 10`
rev=`expr $rev \* 10`
rev=`expr $rev + $r`
n=`expr $n / 10`
done
echo "THE REVERSE IS-$rev"
if test $rev -eq $t
then
echo "THE NUMBER IS PALINDROME"
else
echo "THE NUMBER IS NOT PALINDROME"
fi

---

OUTPUT:

ENTER A NUMBER-
121
THE REVERSE IS-121
THE NUMBER IS PALINDROME

Write a shell script in Linux/Unix to solve the expression--x2+7x+12=0

---

tput clear
echo THE expression is-X^2+7X+12=0
echo roots are---
a=1
b=7
c=12
p=`expr $b \* $b`
s=`expr $a \* $c`
v=`expr $s \* 4`
k=`expr $p - $v`
m=`echo $k ^ 0.5 |bc`
l=`echo -$b + $m |bc`
l1=`echo -$b - $m |bc`
o=`expr 2 \* $a`
x1=`echo $l / $o |bc`
x2=`echo $l1 / $o |bc`
echo X1= $x1
echo X2= $x2

---

OUTPUT:

THE expression is-X^2+7X+12=0
roots are---
X1= -3
X2= -4

Write a shell script in Linux/Unix to solve the following---S=1.2+2.3+3.4+4.5+.....

---

tput clear
echo the sum of the series---1.2+2.3+3.4+4.5......
echo--------------------------------------------------
echo enter the no of element
read n
s=0.1
sum=0
i=0
while test $i -lt $n
do
s=`echo $s + 1.1 |bc` 
i=`expr $i + 1`
sum=`echo $sum + $s |bc`
done 
echo $sum

---

OUTPUT:

the sum of the series---1.2+2.3+3.4+4.5......
--------------------------------------------------
enter the no of element
5
17.0

Write a shell script in Linux/Unix to find the sum of squares of n natural numbers.

---

tput clear

echo ENTER THE NUMBER OF ELEMENTS-

read n

i=1

sum=0

while test $i -le $n

do

p=`expr $i \* $i`

sum=`expr $sum + $p`

i=`expr $i + 1`

done

echo $sum

---

OUTPUT:

ENTER THE NUMBER OF ELEMENTS-

5

55

Write a shell script in Linux/Unix to find sum of Digits of a number.

---

echo "ENTER A NUMBER-"
read n
sum=0
while test $n -ne 0
do
dig=`expr $n % 10`
sum=`expr $sum + $dig`
n=`expr $n / 10`
done
echo "THE SUM OF DIGITS OF $n IS- $sum" 

---

OUTPUT:

ENTER A NUMBER- 255
THE SUM OF DIGITS OF 255 IS-12

Write a shell script in Linux/Unix to find out the value of nCr.

---

clear
echo “ Enter values for n & r”
read n
read r
t=0
i=1
a=1
b=1
c=1
d=0
while [ $i –le $n ]
do
a=`expr $a \* $i`
i=`expr $i + 1`
done
i=1
while [ $i –le $r ]
do
b=`expr $b \* $i`
i=`expr $i + 1`
done
i=1
d=`expr $n - $r`
while [ $i –le $d ]
do
c=`expr $c \* $i`
i=`expr $i + 1`
done
i=`expr $b \* $c`
t=`expr $a / $i`
echo “ The Result Is = $t”

---

OUTPUT:

Enter values for n & r
4
2
The Result Is = 6

Write a shell script in Linux/Unix to find Factorial of a given number.

---

echo "ENTER A NUMBER-"
read n
fct=1
i=1
while test $i -le $n
do
fct=`expr $fct \* $i`
i=`expr $i + 1`
done
echo "THE FACTORIAL OF THE NUMBER IS -" $fct

---

OUTPUT:

ENTER A NUMBER-
5
THE FACTORIAL OF THE NUMBER IS-120

Write a shell script in Linux/Unix to generate Fibonacci series.

---

tput clear

echo enter the range of the fibonacci series----

read n

echo -------------------------------------------------

a=0

b=1

i=2

echo $a

echo $b

while test $i -lt $n

do

c=`expr $a + $b`

echo $c

a=$b

b=$c

i=`expr $i + 1`

done

---

OUTPUT:

enter the range of the fibonacci series----

9

-------------------------------------------------

0

1

1

2

3

5

8

13

21